Mathematics

Ratio and proportions question

A typical human erythrocyte has a volume of about 90 fL (femtoliters), and red blood cells make up approx. 40% of blood volume.How many red blood cells are present in 1 mL of blood?-Seriously, simple

Calculus Question...

I need a little help with this problem... If lim x->1 (f(x)-8)/(x-1)=10, find lim x->1 f(x) The answer is 8 according to the back of the book, but I have no clue how to arrive at that number. Please

Find the tangent to this curve

A curve is given by 3x^2 +3y^2 + 2xy − 2x − 2y = 0 what is the tangent to this curve at (0,0) Is it y=-x? Thanks in advance for answering-Lets find out 3x^2 + 3y^2 + 2xy - 2x - 2y = 0 6x * dx + 6

Can someone help with these Metric System Conversions

I know this should be easy, but Im really having trouble. Im not understanding how many zeros are needed when converting to micro or nano. I mean are u suppose to have all six zeros for mirco or all n

How do I factor 24xy^5+9y^4

= 24xy^5+9y^4 Factor out 3y^4 Answer = 3y^4(8xy+3)-3y^4(8xy + 3)

What table of ordered pairs corresponds to the function y=-3x+1

F) x: -2,-1,0,1,2 y: -5,-2,1,4,7 G) x: -2,-1,0,1,2 y: 5,2,-1,-4,-7 H) x:-2,-1,0,1,2 y: 7,4,1,-2,-5 J) x:-2,-1,0,1,2 y: -7,-4,-1,2,5-y=-3x+1 x=0, y=1 only F and H need to solve x=1, y= -2 only H an

X/2 + 5x/6 = 16........ solve this step by step. plz...

I would look in the book but its a worksheet and i dont know what lesson it is.-x/2 + 5x/6 = 16 3x/6 + 5x/6 = 16 (3x + 5x)/6 = 16 8x/6 = 16 8x = 96 x = 12-1- Multiply the left and the right parts

Help with algebra equation

the question says solve by factoring, and the equation is b^2-b-20=0, with b being a variable and the ^2 meaning squared. i already factored the equation (i think) fully or half way, with my answer be

Simplify √-16√-169 Math helP!!

i remember some steps but i cant finish it... show steps please?-√-16√-169 = (4i)(13i) = 52i² = 52(–1) = –52-The results are imaginary numbers. You cant square root a negative number. Your answers wi

Which counterexample makes the statement false: |n2| > n, where n is a real number

(n2 is n squared) a) n= -10 b) n= -1/5 c) n= 1/2 d) n= 5-c, you would get 1/4>1/2, which is false

What is the radius of this roll of tape

A roll of adhesive tape is wound round a central cylindrical core of radius 3cm. the outer radius of a roll containing 20m of tape is 4cm. Approximately, what is the outer radius of a roll containing

I need help with these math problems please help

I dont know what to do please help -1 1/4 n+17 -1 1/3 Q-1 1/3>-2 1/2-I am assuming that it is a letter T before number 3 in your 1st question so, just place the numbers on one side and the letters o

How to work my Algebra problem

18 / 2X3 + 5 to the 3rd power-128-I did something wrong, the answer is 152. lol.Report Abuse-w to the hite power.

Describe the shift of the parabula. please help :)

y=x^2 to y= (x+3)^2 -2show me the steps Thank You:)-Because the +3 you do the opposite of it and go -3 on the y axis since its in parenthesis and since -2 isnt you just go down 2

Show limit does not exist

Let D = R^2 / {(0.0)} and f : D > R be given by f(x; y) = 1 - cos(x^2 - y^2)/(x^2 + y^2)^2 : Show that lim f(x; y) does not exist.-If you approach along the x axis (y=0), you get Lim (as x approache